Textile paint



Patented Apr. 22, 1930 UNITED STATES PATENT OFFICE TEXTILE PAINT No Drawing.

My invention relates to a liquid paint and medium therefor, and method of reparation of the same, which is particular y useful for incorporating color designs in the finer textiles, such as silks, fine woolens, cotton and linen fabrics, etc.

In a paint for this purpose it is important that it be of a character such that it will not affect the texture or strength of the textile in which it is incorporated, but will, on the contrary, leave the.textile with all of its original freshness, softness, pliability and strength unimpaired. It should also be of a character such that it may be readil applied, preferably by the ordinary paint rush or air brush, and capable of being localized with no substantial tendenc to run or spread. Particularly it must be capable of penetrating the fabric to form a substan- 2o tially permanent design throughout the depth of the fabric structure, so as to form in effect an integral part thereof, appearing on both sides of textiles of the finer weave and capable of being washed or cleansed 2 without affe ting or impairing the quality of the color design. The object of the invention therefore is a liquid paint which is readily applicable to textiles of the finer qualities by theordinary paint brush and which so is harmless and noninjurious to the strength or texture of the fabric and moreover which can be readily applied and incor orated as a permanent part of the textile without blurring, spreading or running, the paint being of a character and being prepared in a manner so as to render it readily capable of being localized and dried and the color permanentl fixed or set within the design limits. A urther object of the invention is a paint of, the above indicated character which is caable of withstanding the severe conditions lncident to the. marketing and dispensin of the same and resistant for indefinite periods to impairment from changes in temperature 4 and atmospheric conditions. A further object of the invention is a paint of the above indicated character which may be economically produced and dispensed and is capable of being produced in uniform quality from day to day. A further object of the inven- Application filed October 15, 1925.

Serial No. 62,648.

tion is a medium or carrier for such a paint.

I have found that a paint-suitable and entirely practicable for the above purposes can be obtained by thoroughly and intimately mixing an aniline dye of the desired color with and incorporating it into gum tragacanth as a base, especially when the gum tragacanth base is treated and prepared in the manner hereinafter set forth. The gum tragacanth should be pure in quality and white in color, as for example that designated in the trade as U. S. P. As a preservative to maintain the original freshness and quality of the paint for indefinite periods, it is essential that some antigerm or equivalent material or ingredient also be incorporated therein, and I prefer the use of sodium benzoate for this purpose, although formaldehyde and other materials of this general character might be used with more or less indifferent but unsatisfactory results, as compared to the sodium benzoate. I prefer to add to the mixture also a small proportion of acetate of aluminum which tends to fixit and fastness of the color in the texture of the fabric in which the design is incorporated, although fairly satisfactory results can be obtained without the use of such ingredient. Alum or oxalic acid may be substituted for the acetate of aluminum with more or less indifferent results.

The most satisfactory proportion of ingredients in the paint and t e preferred method of manufacture -whereby a paint of the above indicated characteristics and these proportions is obtained, are as fol l0wsThe um tragacanth, as for example in lump form, is thoroughly washed and cleansed to remove any foreign material and substances therefrom and is then soaked in water for a number of hours,-preferably overnight. The sodium benzoate and the acetate of aluminum are added and the mixture of soaked gum tragacanth, sodium benzoate and aluminum acetate is then brought to the boiling point by the application of suitable heat and maintained at such boiling point for several hours, preferably two to three hours, and while at the boiling point the mixture is thoroughly agitated by stirring. To this specialmatter may be varied to suit the 1y prepared gum tragacanth base, which acts as the carrier or medium for the aniline dye being used, is added the aniline dye of the proper and desired proportions and thoroug ly' mixed therewith as by stirring. have found that one pound of gum tragacanth in lump form when soaked in 5 gallons of water overnight and then thus treated at found that 4060 grams of the aniline dye powder when added to 3 gallons of the specially prepared and treated base produces an entirely satisfactory paint "which is practically applicable to the finer textiles and usable in the above manner indicated, though of course the relative proportions of coloring requirements. Water may be adde to dilute the paint to the consistency desired. A paint of any shade or ,color may be obtained by utilizing the proper shade of aniline dye powder. The liquid paint of this character and prepared in this manner may be applied to'the textile by the use of the ordinary paint brush or air brush and if of the roper conslstency, which may be regulated by the introduction of either water or medium (dependinglupon whether the aint is too t ick or too t in), thecoating o paint, unless he coating is undul thick, will not blur, spread 91' run, but wi remain fixed and localized in the identical manner in which it is applied I thereto rby the brush. Moreover,'such paint is free from gluey stickiness, dries quickly after a plication, anddoes not harden or 1n]ure t e texture of the textile to which it is 'ap lied.

e preferable manner of applyin and setting the paint on the textile is. as f0 lows: After the coating has become thorou hly dry, the painted parts of the textile are p aced between two 0 ean white-cloths slightly dam ened with water; The cloths should not he too damp or wet for otherwise the color may be affected. The painted parts of thetextile between the damp cloths are then pressed and 1roned with a hot iron until dr and this operation may be repeated two or t ree times to make sure that the color is properly set,

. but of course clean cloths should be utilized at each repetition. If done properly, this will set and fix the color-firmly into the texarticular'f fabric, the ironing between the damp cloths producing a hot vapor in intimate contact with the paint and texture of the fabric. The article may be washed or dry-cleaned in the ordinary manner after this process, like any other colored fabric, and if pure mild soaps are used and proper care utilized, the color is unaffected t ereby.

The paint of the above character and prepared in the above manner is particularly suitable for textiles of silk, wool, or leather and anything ofanimal' origin. For textiles of cotton, linen and anything of vegetable origin, the same basic medium or carrier is utilized, but instead of the .acid aniline dye powder a basic aniline dye of the properproportions is to be used for thorough and inti- I mate mixing with the specially prepared gum tragacanth base. Also for use on cotton goods there should be added to the specially prepared base a small quantity of tartar emetic (chemically pure) dissolved in water or equivalent, and I prefer to use approximately 10 grams of such tartar emetic to each 'gallon of the specially treated and prepared medium. The purpose of the tartar emetic is to neutralize the acid used in fixing and setting the color and any suitable salt effective for. that purpose maybe used, although I prefer the tartar emetic. Except, therefore, for the use of the basic dye in the place of the; acid dye and the addition of the small quantity of tartar emetic to the paint or. the medium therefor for the cotton textiles or fabrics and other textiles of vegetable origin, the paints for the two classes of textiles arealike.

In applyingthe color to cotton, linen, or goods of other vegetable ori in an acid fixative is applied to the fabric eforethe paint is applied, and I prefer tannic acid powder dissolved in water for this purpose. This liquid coating prepares the cotton or linen material for the application of cotton colors .and fixes and makes the color fast.

preparatory eoating is permitted to become dry and then the paint isapplied thereover to form the desired designs'on the textile. The method of setting the color is then the same as described above, namely the hot ironing application thereof before thepaint'coating is applied. T e novel paint of my invention above de;

scribed is transparent and is therefore par-'1 ticularly useful in painting designs on white textiles, but if designs are to be incorporated in colored materials, a paint of the required color to combine with that of the color of the material should be applied to ob ain the resultant desired color. For example if a This green color design is desired on blue material, a yellow paint must be used.

While I have described my invention as being particularly applicable to incorporating color designs on the finer textiles, it is also applicable to textiles of coarser texture such as repps, sheetings and pile fabrics, and also to furs, feathers, leather, etc.

Having thus described my invention, What I claim and desire to protect by Letters Patent is:

1. A paint for forming designs on textiles consisting of a pure gum tragacanth base with sodium benzoate, acetate of aluminum, and an aniline dye thoroughly and intimately incorporated therein to form a part thereof.

2. A paint for use in incorporating color designs into the finer textiles which consists of a pure gum tragacanth base dissolved and diluted to a consistency applicable by brush and containing an aniline coloring matter and a preservative thoroughly and intimately incorporated therein to form a part thereof.

3. A medium or carrier for an aniline dye coloring matter and particularly useful in incorporating permanent color designs in the finer textiles which consists of pure gum tragacanth dissolved and treated by being brought to the boiling point and diluted to a consistency applicable by a brush and containing a preservative to preserve the freshness thereof.

In testimony whereof, I have signed my name to this specification.

L. CHESTER LORDLY. 

